Adsorption Test Protocols Quiz

What is the first step in the NBC production process?

• Clean with distilled water

• Mix NBC with solution for 2 hrs

• Pyrolysis at 200oC

• Ball milling / grinding

Which parameter is NOT part of the physicochemical characterizations for NBC production?

• Surface area

• Conductivity

• Moisture content

• Percentage yield

What is the purpose of modifying NBC with MgCl2?

• Compare the effect of pyrolysis time

• Test the capacity

• Enhance surface area

• Increase size/Zeta

In the preliminary test, what parameter is varied while fixing all other parameters?

• Equilibration time

• Initial concentration of phosphate

• Dose of adsorbent

• pH and point of Zerocharge

What is the purpose of the adsorption isotherm study?

• Determine the effect of modification with metal

• Analyze the residual concentration

• Fit data into Langmuir and Fred models

• Shake the mixture @150 rpm

What is the final step in the optimization of operational parameters?

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At what rpm should the mixture be shaken in the kinetics study?

• 150 rpm

• 120 rpm

• 180 rpm

• 100 rpm

What is the purpose of taking samples at different times in the kinetics study?

• Isolate the residuals

• Measure the residual phosphate

• Adjust pH

• Fit the data into 1st and 2nd order

What is the equilibration time in the optimization of operational parameters?

• 30 minutes

• 1 hour

• 2 hours

• 3 hours

What is the main focus of the NBC production process?

• Size/Zeta

• Surface area

• Percentage yield

• Conductivity